AMD Radeon HD 7640G + HD 7670M Dual Graphics vs AMD Radeon HD 7630M

AMD Radeon HD 7640G + HD 7670M Dual Graphics

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The AMD Radeon HD 7640G + HD 7670M Dual Graphics is the combination of a integrated AMD Radeon HD 7640G APU processor graphics card and a dedicated entry level AMD Radeon HD 7670M graphics card in CrossFire combination. It is called AMD Dual Graphics or asymmetric CrossFire and uses AFR (Alternate Frame Rendering) to render different frames on the two graphic cores. Therefore the combination also suffers from micro stuttering (different spaces between two images lead to stuttering altough the framerate is high enough for fluent gaming with only one GPU).

The performance of the Dual Graphics solution depends greatly on the driver support for the used games. In some games the performance may even degrade by 10-15% compared to using only the APU graphics card. Therefore, due to the micro stuttering and performance problems, Dual Graphics may impose more problems than bring performance gains. Only in a best case scenario the performance is similar to the GeForce GT 635M.

The features like PureVideo HD (UVD3) or OpenCL support are similar to the two graphics cards.

As both graphics cards are rendering frames, the power consumption is clearly higher than using only one GPU.

AMD Radeon HD 7630M

► remove AMD Radeon HD 7630M

The AMD Radeon HD 7630M (sometimes also called AMD Radeon HD 7630M) is a middle class graphics card for laptops in 2011. It is based on the same chip as the Radeon HD 6630M and the 6 SIMD blocks (= 480 shader) are clocked at 450 MHz. The card is still build in 40nm and supports DirectX 11.

The 480 Stream processors are still based on the 5D architecture similar to the 5000 series. Therefore, the number of shaders is not comparable to the 1D cores of current Nvidia GPUs. The Tessellation performance should be improved (like the desktop 6800 series) with the new cards. The Stream processors can be used with DirectX 11, OpenGL 4.1, DirectCompute 11 and OpenCL. With the later two the cores can also be used for general computations like transcoding videos.

The 3D performance should be similar to the Radeon HD 6630M due to the comparable clock rates and the 480 shaders. Therefore, demanding games of 2011 like Battlefield 3 or Anno 2070 are running only in low detail settings fluently. Games with less demanding 3D engines like CoD MW3 should also run in high details.

The new UVD3 video decoder supports the decoding of MPEG-4 AVC/H.264, VC-1, MPEG-2, Flash and now also Multi-View Codec (MVC) and MPEG-4 part 2 (DivX, xVid) HD videos on the graphics card.

Furthermore, the HD 7600M series integrates a HD audio controller to transmit HD Audio (TrueHD or DTS Master Audio) over HDMI and DisplayPort (e.g. for Blu-Ray videos).

The AMD HD3D Technology offers support for Blu-Ray 3D and 3D displays (integrated and external). However, the solution is not as mature as Nvidias 3D Vision.

Thanks to Eyefinity the graphics chip is able to theoretically drive up to 5 monitors simultaneously. However, this only works if the laptop features enough DisplayPort outputs.

The power consumption of the chip should be slightly below the Radeon HD 6630M and therefore suited for smaller laptops (13-14").

AMD Radeon HD 7640G + HD 7670M Dual GraphicsAMD Radeon HD 7630M
ManufacturerAMDAMD
Radeon HD 7600M Series
Radeon HD 7690M XT (compare) 480 @ 725 MHz128 Bit @ 3600 MHz
Radeon HD 7690M (compare) 480 @ 600 - 725 (Boost) MHz128 Bit @ 3600/1800 MHz
Radeon HD 7660G + HD 7670M Dual Graphics (compare) 862 @ 685 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7670M Dual Graphics 736 @ 655 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7520G + HD 7670M Dual Graphics (compare) 736 @ 655 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7670M (compare) 480 @ 600 MHz128 Bit @ 1800 MHz
Radeon HD 7650M (compare) 480 @ 450 - 550 (Boost) MHz128 Bit @ 1800 MHz
Radeon HD 7630M 480 @ 450 MHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7610M Dual Graphics (compare) 656 @ 655 / 450 MHz128 Bit @ 1800 MHz
Radeon HD 7610M (compare) 400 @ 450 MHz128 Bit @ 1600 MHz
Radeon HD 7690M XT (compare) 480 @ 725 MHz128 Bit @ 3600 MHz
Radeon HD 7690M (compare) 480 @ 600 - 725 (Boost) MHz128 Bit @ 3600/1800 MHz
Radeon HD 7660G + HD 7670M Dual Graphics (compare) 862 @ 685 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7670M Dual Graphics 736 @ 655 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7520G + HD 7670M Dual Graphics (compare) 736 @ 655 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7670M (compare) 480 @ 600 MHz128 Bit @ 1800 MHz
Radeon HD 7650M (compare) 480 @ 450 - 550 (Boost) MHz128 Bit @ 1800 MHz
Radeon HD 7630M 480 @ 450 MHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7610M Dual Graphics (compare) 656 @ 655 / 450 MHz128 Bit @ 1800 MHz
Radeon HD 7610M (compare) 400 @ 450 MHz128 Bit @ 1600 MHz
ArchitectureTerascale 3Terascale 2
736 - 480 -
Core655 / 600 MHz450 MHz
Memory1800 MHz1800 MHz
Bus128 Bit128 Bit
yesno
DirectXDirectX 11, 5.0DirectX 11, 5.0
Technology32/40 nm40 nm
Size
Introduced15.05.2012 07.01.2012
CodenameThames-LP
MemoryDDR3

3DMark - Cloud Gate Standard Score 1280x720
min: 3566     avg: 3709     median: 3566 (6%)     max: 3995 Points
3DMark - Cloud Gate Standard Graphics 1280x720
min: 5715     avg: 6137.7     median: 5715 (3%)     max: 6983 Points
3DMark - Fire Strike Score 1920x1080
min: 529     avg: 570.7     median: 529 (2%)     max: 654 Points
3DMark - Fire Strike Graphics 1920x1080
min: 623     avg: 666.3     median: 623 (2%)     max: 753 Points
3DMark - Ice Storm Standard Graphics 1280x720
min: 37273     avg: 48281.7     median: 53786 (7%)     max: 53786 Points
3DMark 11 - Performance 1280x720
min: 1585     avg: 1626.3     median: 1628 (5%)     max: 1664 points
3DMark 11 - Performance GPU 1280x720
min: 1629     avg: 1671     median: 1649 (3%)     max: 1757 points
3DMark Vantage
P Result 1280x1024 + AMD Radeon HD 7640G + HD 7670M Dual Graphics
P GPU no PhysX 1280x1024 + AMD Radeon HD 7640G + HD 7670M Dual Graphics
3DMark 03 - Standard 1024x768
21584 Points (11%)
3DMark 05 - Standard 1024x768
min: 10288     avg: 10402.7     median: 10288 (22%)     max: 10632 Points
3DMark 06 Standard 1280x1024 + AMD Radeon HD 7640G + HD 7670M Dual Graphics
Unigine Heaven 3.0 - DX 11, Normal Tessellation, High Shaders 1920x1080
13.9 fps (5%)
Unigine Heaven 3.0 - OpenGL, Normal Tessellation, High Shaders 1920x1080
10.6 fps (6%)
Cinebench R10 Shading 32Bit + AMD Radeon HD 7640G + HD 7670M Dual Graphics
Cinebench R11.5 OpenGL 64Bit + AMD Radeon HD 7640G + HD 7670M Dual Graphics
LuxMark v2.0 64Bit - Room GPUs-only
145 Samples/s (3%)
LuxMark v2.0 64Bit - Sala GPUs-only
342 Samples/s (3%)
ComputeMark v2.1 - Normal, Score 1024x600
772 Points (3%)

Average Benchmarks AMD Radeon HD 7640G + HD 7670M Dual Graphics → 100%

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-
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

Crysis 3

Crysis 3

2013
low 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
28.7  fps
med. 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
15  fps
high 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
10.5  fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
low 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
99.2  fps
med. 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
45.9  fps
high 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
35.9  fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
low 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
19.9  fps
med. 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
18.7  fps
high 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
13.4  fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
Fifa 13

Fifa 13

2012
low 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
130.8 133 ~ 132 fps
med. 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
100.9 108 ~ 104 fps
high 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
99.4 103 ~ 101 fps
ultra 1920x1080
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
65 71 ~ 68 fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
low 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
34.2 37.4 ~ 36 fps
med. 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
26.7  fps
high 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
25.5  fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
low 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
78.5 96 98 ~ 91 fps
med. 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
74 74 ~ 74 fps
high 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
65.4 70 ~ 68 fps
ultra 1920x1080
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
43.3 48 ~ 46 fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
Anno 2070

Anno 2070

2011
low 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
69 74.9 90 ~ 78 fps
med. 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
28 31.8 ~ 30 fps
high 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
19 20.6 ~ 20 fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
low 1280x720
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
35.1  fps
med. 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
30.8  fps
high 1366x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
25.1  fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
F1 2011

F1 2011

2011
low 800x600
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
59  fps
med. 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
37  fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
low 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
95.5  fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»
Dirt 3

Dirt 3

2011
low 800x600
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
70.3  fps
med. 1024x768
100%
Radeon HD 7640G + HD 7670M Dual Graphics:
41.3  fps
Radeon HD 7640G + HD 7670M Dual Graphics:
»

Average Gaming AMD Radeon HD 7640G + HD 7670M Dual Graphics → 100%

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Redaktion, 2017-09- 8 (Update: 2017-09-11)